No this is not a compound sentence
I think the answer is “Working together, America has done well”
The main purpose of subheadings are:
They stand out because of their size and attract attention.
The scanner will stop to read them and continue scanning until the next subhead which they'll then read.
I think its C, i could be wrong, good luck!
Answer:
hans lippershay and lyman spitzzer
Explanation:
i had it on a test
